The Boy Scouts have one. You can read it in a BSA manual. If I recall, it's basically:
cut away from yourself and others,
close a knife with 2 hands,
hand a knife to someone closed (or butt-first for fixed-blade),
don't carry an open knife,
and then the maintenance stuff like keeping it clean, sharp and oiled.
These days, you might have to add "following carry laws", especially at school; don't use your knife to perform a carjacking, etc.